GeForce GT 220 GDDR3 vs Radeon HD 6750 1GB

Intro

Compare all of that to the Radeon HD 6750 1GB, which features core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 720 SPUs as well as 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 28 Watts (48%)

Memory Bandwidth

In theory, the Radeon HD 6750 1GB is 98% faster than the GeForce GT 220 GDDR3 overall, because of its greater bandwidth. (explain)

Radeon HD 6750 1GB		64000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 31616 (98%)

Texel Rate

The Radeon HD 6750 1GB will be quite a bit (approximately 161%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

Radeon HD 6750 1GB		26100 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 16100 (161%)

Pixel Rate

The Radeon HD 6750 1GB is quite a bit (more or less 132%) faster with regards to anti-aliasing than the GeForce GT 220 GDDR3, and also able to handle higher resolutions while still performing well. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 6600 (132%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.